Grain-cleaning device



` 4 sheets-sheet 1.

(No Model.)

F. F. LANDIS. eEAIN CLEANINGr DEVICE.

Patented Mar. 10, 1891.

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(No Model.) 4 Sheets-Sheet 2.

F. F. LANDIS.

GRAIN CLEANING DEVICE- No. 447,834. l Patented Mar. 10, 1891.

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No. 447,834. Patented Mar. 10,1841.

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' E'. P. LANDIS.

GRAIN CLEANING DEVICE. y No. 447,834. Patented Mer. 10,1891.

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WI/VESSE'S IJVVEMZ) UNITED STATES PATENT OFFICE.

FRANK F. LANDIS, OF VAYNESBOROUGH, PENNSYLVANIA.

GRAIN-CLEANING DEVICE.

SPECIFICATION forming part of Letters Patent No. 447,834, dated March 10, 1891,

Application filed November 8, 1890. Serial No. 370,799. (No model.)

To all whom t may concern.-

Be it known that I, FRANK F. LANDIS, a citizen of the United States, residing at Vaynesborough, in the county of Franklin and State I driving mechanism.

of Pennsylvania, have invented certain new and useful Improvements in GraineCleaning Devices; and l do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

This invention relates to grain-cleaning devices for use in separators of the class shown and described in a separate application for Letters Patent filed on September 15, 1890, Serial No. 365,074.

This invention consists in the novel construction and combination of the parts hereinafter fully described and claimed, whereby the tailings and dirt are removed from the grain.

In the drawings, Figure l is a longitudinal section through the cleaning devices and the fan. Fig. 2 is an end view ofthe cleaning devices. Fig. 3 is a plan view of the cleaning devices from above. Fig. a is a plan view from above of the devices for vibrating the discharge-spouts. the sliding bar C.

A is an inclined board which conducts the mixed grain and tailings to the cleaning devices, t-he straw and light chaff having been previously removed.

A is a revolving fan or blower which forces a blast of air through the cleaning devices in the direction of the arrows in Fig. l.

B is the casing of the separator.

b is the upper cleaning-roll, and b is the lower cleaning-roll, both of which are journaled in the said casing.

B are similar toothed wheels secured upon the end of the rolls outside the casing, and 2 is an idle-wheel journaled on the pin 3, projecting from the casing and intergearing with both of the wheels B', so that both rolls may be driven in the same direction, as indicated by the arrows in Fig. l, by any approved Fig. 5 is a detail view of Each roll h and Z9 is provided with spiral grooves 4, which meet in the center of the roll and run in opposite directions, in the form of right and left handed screw-threads, t0 the ends of the roll. Each screw-thread is preferably provided with notches 5 at various points of its periphery, but these notches may be omitted, if desired. The upper roll b has cams G upon its ends for jolting the grainplates.

C are two side plates for supporting the grain-plates. The front or upper ends of these side plates rest upon the transverse bar C', supported between` the casing-sides, and the rear or lower ends of the side plates are provided with notches 25, which engage with the bosses c on the ends of the rods 12,which rest upon the brackets c', secured to the casing. The bar C is provided with an inclined portion 7, which slides upon an inclined guide portion 7 on the casing at one end and has its other end secured to the inclined slot 8 of the guide-bracket 9 by means of the thumbscrew 10. Vhen the bar C is pushed in, as shown in Fig. 5, the side plates are held clear of the cams (i but when the said bar is pulled out the side plates are lowered, so that they may be jolted by the revolving cams, which bear against the wearing-plates 11, secured to the said side plates. This jolting motion is advantageous when the grain is Wet and does not slide freely.

D is theupper grain-plate secured between the side plates C, and d is the upper fluted plate secured to the plaie D in front of the upper roll. This flutcd plate might be dispensed with altogether and the flutes might be cut in the edge of the plate D. The grain and tailings from the board A slide over the liuted plate d and a portion of the grain falls between the grooves of the roll by gravity against the pressure of the blast. The tailings, which consist chiefly of broken headsof wheat and other similar matter, are carried over the grooved roll, and the object of making the grooves in the form of spiral threads is to work the tailings crosswise against the ends of the iiutes on the grain-plate; This changes their position, so that they'do not fall between the rolls and the ilutes, but are tilted sidewise and carried over the roll, The notches 5 also assist by catching hold of broken heads and carrying them over the roll. The spiral grooves might be made continuous in one direction from one end of the roll to the other, but they are preferably right and IOO left handed, so as to workthe material away from the. center of the roll, Where it is apt to be most plentiful, and spread it evenly all across the roll.

E is the second grain-plate provided with the fluted plate e and secured in front of the roll b in asimilar manner tothe grain-plate D and luted plate d just described.

E is an adjustable retainingfplate secured to the plates e', which are pivoted by the pins f to the side plates C in front of the grainplate E, and F are thumb-,screws passing through curved slots 2G in the plates e for securing the plate E at any Adesired angle. The grain and tailings heap up upon the plates E and E', as indicated by the dotted lines in Fig. 1, and the adjustment of the remaining-.plate E adapts the device to different sorts ofgrain which slide at different an- A plate iscleaned from dirt by the blast and.

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The grain falling from the upper flnted slidesoff the front of the heap and the taillngsuanfd the remaining` grain fall fromthe Tupperjroll onto the rearside ofthe heap and areoperated on bythe secon diiutedplate and roll.

5 G is the JL hird grain-plate secured between p the side Vplates C behind and. .below thesec- .ond grecved roll, and g isa toothed comic provided with`1teeth jand adj ustably secured tol f the vplate G by means of the thumb-screws G',

'. wghichpass through; the slots g.

H is a :triangular dividing-bar secured to.

the wedgefshaped end brackets @which are .1 dropped `into correspondinglyshaped recesses infthejside platesY C, so that theapex of the sc that the said bar may be easily removed.

. order thata screen may be inserted in its place ,.barcomcs under the teeth of the comb g,and

'LheQbj ect in makin gthe bar H removable is in whenjtimothy or othernsmall seed is being cleaned. The comb is madeadjustable, be-

y cause the bar H is. supported by. the v.plates C,

Awhich also support 44the. comban d the distance `betbgveen theteethof thesaid comb andthe apex. Vot' "fthebaig H could. not ,otherwise bevaried.

-: .The' remaining `grain falls between the teeth ofthe comb g and slides off-the front of the bar H, and 111e tailings slide off the rear, side lof. thebar H and fall into theA tailings-spout Jffflhefdistance between the teeth of the Hatedplates d ande and therolls D and Eis .,Eadjusted to suit. differentI sorts of, grain by whichthebefore-mentioned bosses c project.

` .means of therodsl, from the rear ends of j 'lhefront ends of the/rods 1 24 are pivoted to the levers 13,. securedonthe shaft 14:, which is. journaled in the casing.

. Ahandlel is secured tc oneend of the shaft 14 outside the easing, and 1G` is a thumb-screw which passes 4.hlough ,thecurved slot 17 in theplate 17 for securing the handle in any desired position bymeansof theA links 7a, and Kis a screen of clined vguides n perforate material secured above ,the said gather-board and vibrating with it. The grain slides oft" the screenV and falls into the grain'spont M, and the fine heavy dirt and the very small seeds-such as grass-seedswhich pass through the screen slide down the gather-board.` The gather-board is provided with an opening k across its lower end near the grain-spout, and 1S is a tilting` guide-slat pivoted to t-he brackets 19 below the said opening. Thrashermen do not usually trouble themselves to remove the finerdirt and grassseed from the grain, and the guide-slat 18 is usuallyset, as shown in Fig. 1, so that the small seeds may slide off it into the grain-spont. Whenever it is .thought desirable, toremove the grass and other smallseeds from the grain, the guide-slat is tilted over on its pivots, as indicated by the dotted lines in: Fig. 1,and the grassfseed is allowed to accumulate .in a heap on the ground at therear ofthe grainspout. The gather-board and screenare vibrated.longitudinally by means of theeccentric-.rods m and theeccentrics ym, secured r upon the shaft N of the straw-stacker and elevator, to which rotarymotion is imparted in the usual manner.

N? is a shaking-shoe supported onthe up- 4 wardlyand rearwardly inclined guides 1n behind the cleaning devices. The bottom of this shoe is provided with theserrations n for causing the material which falls upon it i tobecarried overits surface and discharged `oat of the rear of the machine.

O is a space in front of the shoe through which the tailings may fall into the tailingsspout. The tailings whichfall into this spout ,contain .unthrashedgrain and are returned to ,the thrashing-cylinder.by an ordinary elev ator,A which isnot shown in the drawings, as it doesnot form apart. ofthe present invention. It sometimes happens that when the machine has been for some time in operation heavy rubbish will be repeatedly carried throughthe machine. This coa1se 1natter -such as sticks, cornstalks, and. other rubbish-is goti-id of by means ofthe sliding frame 20, provided with a series of inclined slats 21. This frame usually rests `upon the shoe Nbehind the space O, but when it is Apushed forward over Athetailiugsspout it prevents this rubbish from falling` into. the spout and causes it to be carried over the space O onto the serrations a and thereby discharged .out 0E the rear of the machina` The shoe N is reciprocatedby means of the rods 22,.w.hich are attached to the eccentric-rods m, andl the ingivethe necessary tossing motiomwhich, together withthe serrations, causes the materialen the shoe to be carried to the rear.

The tailings-spout and Ithe grain-spout are pivotally suspended fromathe casing. crosswise of the machine by similar links 24:, and have a reciprocating motion imparted to them inthe -following manner:

P is a double bell-crank lever pivoted on IIO the pin p, which is carried by the support p. The opposite ends of this lever are respectively connected to the grain-spout by the rod r, and to the tailings-spout by the rod r and the middle arm of the said lever is connected to one of the eccentric-rods m by means of the rod R. These rods r 1" R are preferably made of ileXible wood or other similar elastic material, so that they may be springy enough to form operative connecting-rods without a multiplicity of pivotal joints and connections.

l. The combination, with a grain-plate provided with flutes, of a roll provided with spiral grooves and journaled behind the said iiutes at the rear of the said plate, substantially as and for the purpose set forth.

The combination, with a grain-plate provided with flutes, of a roll journaled at the rear of the said plate and provided with spiral grooves and notches arranged out of line with each other on its periphery between the grooves, substantially as and for the purpose set forth. y

3. The combination, with agrain-plate provided with flutes, of a rollA journaled at the rear of the said plate behind the said iiutes and provided with right and left handed spiral grooves extending from the center to the opposite ends of the roll, substantially as and for the purpose set forth.

4t. The combination, with a grain-plate and a revoluble grooved roll at the rear of the said plate, of an adjustable retaining-plate pivoted to the front of the said grain-plate, substantially as and for the purpose set forth.

5. The combination, with a grain-plate, of a toothed comb adj ustably secured to,F the said plate, and sa removable dividing-bar supported belowr the points of the teeth of the said comb, substantially as and for the purpose set forth.

6. The combination, with the side plates, of a grain-plate secured to the side plates, the toothed comb secured to the said grain-plate, and the removable dividing-bar provided with wedge-shaped end brackets adapted to be dropped into pockets in the side plates, whereby the said bar may be supported below the teeth of the comb, substantially as set forth.

7 The combination, with the upper and lower grooved cleaning-rolls, of the side plates, a support for the front ends of the side plates to slide on, brackets forsupporting the rear ends of the side plates, the grain-plates secured to the said side plates in front of the cleaning-rolls, the rods pivotally connected to the rear ends of the side plates, and the cross-shaft provided with a handle and with levers pivoted to the said rods, whereby the distance between the grain-plates and the rolls may be adjusted, substantially as set forth.

v 8. The combination, with the reciprocating gather-board provided with an opening across its lower end, of the perforated screen secured above the gather-board and vibrating with it, the brackets secured to the gatherboard, and the tilting guide-Slat pivoted in the said brackets below the said opening, with one4 or the other of its edges bearing against the under side of the gather board and adaptedto discharge the small seeds into the grain-spout or to one side of it, substantially as set forth.

9. The combination, with the tailings-spout, of the shaking-shoe situated at the rear of the tailings-spout and provided with a serrated bottom, and a frame provided with a series of inclined slats and adapted to be slid on the said shoe over the said tailings-spout, whereby coarse rubbish may be removed from the tailings, substantially as set forth.

l0. The combination, with the longitudinally-reciprocating gather-board, of the grainspout and the tailings-spout, both pivotally supported crosswise of the machine, the revoluble eccentrics and the eccentric-rods connected to the said gather-board, the shakingshoe behindthe said tailings-spout, the rods secured to the eccentric-rods and to the said shoe, the double bell-crank lever pivoted between the two said spouts, the rods connecting the respective spouts with the opposite arms of the bell-crank lever, and the rod connecting the middle arm of the bell-crank lever with one of the said eccentric-rods, whereby all the said reciprocating parts may be operated by the said eccentrics, substantially as set forth.

1l. The combination, with the brackets secured to the casing, of the longitudinally-adjustable side plates for carrying the grainplates, said side plates having their rear ends pivotally supported on the said brackets, a transverse bar forming a support upon which the front ends of the said side plates may slide, the revoluble cams on one of the grainrolls, and the inclined guides supporting the said transverse bar and permitting it to be moved transversely to lower the said side plates onto the cams, substantially as set forth.

In testimony whereof I affix my signature in presence ot' two witnesses.

FRANK F. LANDIS. lVitnesses:

HERBERr W. T. JENNER, G. Anon) ANDERSON.

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